Do we really need to have an argument about going low comp making an engine drive less responsive off boost??
If you lower the compression of an engine from standard it will make less power/torque off boost than it did before, IMO this is not debatable! Even more so on a MFI RST where you cannot compensate for it a little with good mapping.
It's only done to allow bigger boost pressure to be run if your chasing big bhp figures, otherwise it's best to maintain as higher CR as possible....IMO!